Did you not read the article? It says they can't even interview white candidates for jobs.
Even if true, "very hard" /= "not allowed".
So imo "very hard" == "not allowed" because it virtually achieves same result.
That quote sounds like the kind of thing that could easily be an immature employee who doesn't like the idea of a "VP of diversity", or doesn't like the tone of the VP's slides, taking something small and blowing it out of proportion.
Like, they tried to recommend a friend of theirs for an open position and the friend didn't get an interview and suddenly that n=1 case becomes "OMG! They won't let us interview white candidates!!"
It's like, well, you asked for it.